springmvc的json数据交互

ゝ一世哀愁。 2022-05-13 14:48 176阅读 0赞

## 环境准备 ##

所需jar包  
![在这里插入图片描述][70]除此之外还得有jQuery的js包

## 代码 ##

product类

package jsonTest;
    
    /**
     * Created by Administrator on 2018/10/24.
     */
    public class product {
        private String name;
        private double price;
    
        public product() {
        }
    
        public double getPrice() {
            return price;
        }
    
        public void setPrice(double price) {
            this.price = price;
        }
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        @Override
        public String toString() {
            return "product{" +
                    "name='" + name + '\'' +
                    ", price=" + price +
                    '}';
        }
    }

package jsonTest;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    /**
     * Created by Administrator on 2018/10/24.
     */
    @Controller
    public class json {
        @RequestMapping("/sendJson.do")
        public @ResponseBody product sendJson(@RequestBody product p){
            System.out.println(p);
            p.setName("改写后的商品");
            p.setPrice(100);
            return p;
        }
    
    }

<mvc:annotation-driven />

<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
            <property name="messageConverters">
                <list>
                    <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean>
                </list>
            </property>
        </bean>

<%--
      Created by IntelliJ IDEA.
      User: Administrator
      Date: 2018/10/24
      Time: 21:07
      To change this template use File | Settings | File Templates.
    --%>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>JSON与SpringMvc数据交互</title>
        <script src="/jQuery/jquery-1.4.4.min.js"></script>
        <script>
            function sendJson(){
                $.ajax({
                    type:"post",
                    url:"${pageContext.request.contextPath }/sendJson.do",
                    contentType:"application/json;charset=utf-8",
                    data:'{"name":"测试商品","price":99.9}',
                    success:function(data){
                        alert(data.name);
                    }
                });
            }
        </script>
    </head>
    <body>
    <input type="button" value="sendJson" onclick="sendJson()" />
    </body>
    </html>

[70]: /images/20220504/0d7f45b5349a4c5f917b15614de6fa45.png